SIST EN 1370:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Livarstvo - Preiskave hrapavosti površineGießereiwesen - Bestimmung der OberflächenqualitätFonderie - Contrôle de l’état de surfaceFounding - Examination of surface condition25.120.30Livarska opremaMoulding equipment17.040.20Lastnosti površinProperties of surfacesICS:Ta slovenski standard je istoveten z:EN 1370:2011SIST EN 1370:2012en,fr,de01-februar-2012SIST EN 1370:2012SLOVENSKI
STANDARDSIST EN 1370:1997SIST EN 12454:20001DGRPHãþD



SIST EN 1370:2012



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1370
December 2011 ICS 17.040.20; 77.180 Supersedes EN 12454:1998, EN 1370:1996English Version
Founding - Examination of surface condition
Fonderie - Contrôle de l'état de surface
Gießereiwesen - Bewertung des Oberflächenzustandes This European Standard was approved by CEN on 12 November 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1370:2011: ESIST EN 1370:2012



EN 1370:2011 (E) 2 Contents Page Foreword .3Introduction .41Scope .52Comparators .53Requirements .53.1General .53.2Surface roughness examination .63.3Visual examination of surface discontinuities .84Documentation . 11Annex A (informative)
Significant technical changes between this European Standard and the previous edition . 12Bibliography . 13 SIST EN 1370:2012



EN 1370:2011 (E) 3 Foreword This document (EN 1370:2011) has been prepared by Technical Committee CEN/TC 190 “Foundry technology”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document will supersede EN 1370:1996 and EN 12454:1998. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 11 "Surface inspection" to revise the following standards:  EN 1370:1996, Founding — Surface roughness inspection by visual tactile comparators and  EN 12454:1998, Founding — Visual examination of surface discontinuities — Steel sand castings. Annex A provides details of significant technical changes between this European Standard and the previous edition. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
SIST EN 1370:2012



EN 1370:2011 (E) 4 Introduction The surface roughness of a casting is influenced by the manufacturing process (moulding, grinding, finishing, etc.), the moulding materials used (sand, coating, etc.), the production equipment available and the alloy cast. Depending on the applications of the casting, the surface requirements are related to mechanical loadings, appearance, surface treatment, etc. Since cast surfaces do not exhibit the same cyclic character as machined surfaces it is difficult to evaluate their roughness using conventional mechanical, optical, or pneumatic devices. Other optical/electronic means are now available for measuring surface roughness of cast surfaces. For the ease of use, visual tactile comparators are preferred. Moreover, in order to take into account the irregularities on as-cast surfaces, ground surfaces or other means of finishing of castings, comparators should have relatively large dimensions1) in order to make them more reliable and their results repeatable and consistent. Two sets of comparators are in widespread use:  "BNIF 359 Recommandation technique du Bureau de Normalisation des Industries de la Fonderie. Caractérisation d'états de surface des pièces moulées - Utilisation des échantillons types de 110 × 160 mm", available from Editions Techniques des Industries de la Fonderie, 44 avenue de la Division Leclerc, 92310 Sèvres, France [1];  "SCRATA comparators for the definition of surface quality of steel and iron castings", ASTM A 802 Shorter Set, available from Castings Technology International, Advanced Manufacturing Park, Brunel Way, Rotherham, S60 5WG, South Yorkshire, United Kingdom [2]. A third set of comparators, for precision steel castings, is also available:  “SCRATA surface comparators for the definition of surface texture of precision steel castings”, precision set, available from Castings Technology International, Advanced Manufacturing Park, Brunel Way, Rotherham, S60 5WG, South Yorkshire, United Kingdom [3]. This European Standard also specifies 8 levels of surface imperfections based on maximum dimensions to be detected by visual examination. The SCRATA comparators shorter set [2], can also be used for the classification of surface discontinuities on steel and iron castings. BNIF N°359 comparators can be used for all cast metals.
1) 100 mm × 150 mm for SCRATA comparators;
110 mm × 160 mm for BNIF comparators. SIST EN 1370:2012



EN 1370:2011 (E) 5 1 Scope This European Standard specifies methods for the examination of surface condition (roughness and surface discontinuities) of castings. This European Standard is applicable to all cast metals and all casting processes except die casting. 2 Comparators The comparators are essentially positive replicas of actual casting surfaces: as-cast or after further fettling treatment such as shot blasted or ground. Full size photographs of the comparators can be used to assist in making a rapid evaluation of the overall roughness of the comparators. These can give preliminary information for the appropriate selection of a moulding or finishing process. It is emphasized however that the comparators, and not the photographs, shall be used to form the basis of an agreement between the manufacturer and the purchaser. An overview and a comparison of the different categories and levels of the three sets of comparators are given in Tables 1, 2 and 4. 3 Requirements 3.1 General When examination of surface conditions is required, the following shall be agreed by the time of ordering:  the category and severity level required. More than one severity level can be specified for different surfaces of the same casting. This shall be clearly indicated on the drawing;  any types of discontinuities which are unacceptable;  the areas of the castings which are to be examined; these shall be clearly indicated on the drawing;  number of castings to be examined;  the manufacturing stage at which surfaces are to be examined. NOTE 1 Guidelines for the specification of acceptance criteria for surface condition of iron castings are given in EN 1559-3 [4]. NOTE 2 General principles for visual examination are described in EN 13018 [5]. The examination shall be performed by trained personnel with satisfactory visual acuity. SIST EN 1370:2012



EN 1370:2011 (E) 6 3.2
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